Home / 5,148-7,104.30-2,790.15

Finding the Fourth Proportional to 5,148, 7,104.30 and 2,790.15

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Solution

The fourth proportional to 5,148, 7,104.30 and 2,790.15 is: 3,850.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148 : 7,104.30 = 2,790.15 : x
  2. Step 2: Convert to fraction form
    5,148/7,104.30 = 2,790.15/x
  3. Step 3: Cross multiply
    5,148x = 7,104.30 × 2,790.15
  4. Step 4: Simplify right side
    5,148x = 19,822,062.65
  5. Step 5: Solve for x
    x = 19,822,062.65/5,148
  6. Step 6: Final answer
    x = 3,850.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.